Rocker/spring/lifter questions
Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Rocker/spring/lifter questions
I've done some research, seems the Crane golds are just about the "best for the money" rockers, which are full rockers. Comp cams rockers are about the same price, or more.
Question is:
1. Do I need to replace the push rods, or can I re use the stock ones for a rocker swap.
2. Springs. Where can I find those $35 LT4 springs I heard about? All the spring sets in Summit are over $150......
Thanks.
Question is:
1. Do I need to replace the push rods, or can I re use the stock ones for a rocker swap.
2. Springs. Where can I find those $35 LT4 springs I heard about? All the spring sets in Summit are over $150......
Thanks.
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
I doubt Crane Gold are best for the money but everyone is entitled to an opinion. Scorpion is a good buy and carries a lifetime guarantee. I don't think Crane has a guarantee.
If you will buy narrow, self aligning, full 1.6 rockers you won't need new anything except new springs and keepers. The LT4 springs are availible through GMPP. Many recent threads.
If you will buy narrow, self aligning, full 1.6 rockers you won't need new anything except new springs and keepers. The LT4 springs are availible through GMPP. Many recent threads.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
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From: Australia
LT1 /ZZ4 spring kit $35 # 12495494 (16)
Retainer kit $15 # 12495492 (lightweight LT1)
Seats / shims .70c ea # 10212809
From any GM dealer or online like SDPC / Superior Chev.
In any case you are looking for the valve gear from the #12556463 ZZ4 Alum head
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
I doubt Crane Gold are best for the money but everyone is entitled to an opinion. Scorpion is a good buy and carries a lifetime guarantee. I don't think Crane has a guarantee.
If you will buy narrow, self aligning, full 1.6 rockers you won't need new anything except new springs and keepers. The LT4 springs are availible through GMPP. Many recent threads.
If you will buy narrow, self aligning, full 1.6 rockers you won't need new anything except new springs and keepers. The LT4 springs are availible through GMPP. Many recent threads.
I'm kinda learning again....
Tell me, is it your opinion
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
As far as using pushrods go, are you from they school that says the pushrods have to go back in to the same slot they came out of?
I hear the stock pushrods have some flex, is therer truth to this? If so, will aftermarket ones be any advantage?
Thanks.
Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
I may get some flack for this, but I'm still using the stock pushrods with a .622 lift camshaft. I look at the pushrods as my buffer. If my valvetrain gets in a bind, I want the pushrods to fail before a valve or piston.
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Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
BTW, I am re using my pushrods, anyone got a problem with that?
So here's the set up.
Scorpion full roller rockers, LT4 springs, original pushrods.
Seem OK to you guys. I am not trying to build an animal, just a faster C4.
So here's the set up.
Scorpion full roller rockers, LT4 springs, original pushrods.
Seem OK to you guys. I am not trying to build an animal, just a faster C4.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
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From: Australia
Lightweight titanium; a nice little weight reduction on the valvetrain.
Le Mans Master
Joined: May 2005
Posts: 5,214
Likes: 65
From: Queensland, AUSTRALIA
I doubt Crane Gold are best for the money but everyone is entitled to an opinion. Scorpion is a good buy and carries a lifetime guarantee. I don't think Crane has a guarantee.
If you will buy narrow, self aligning, full 1.6 rockers you won't need new anything except new springs and keepers. The LT4 springs are availible through GMPP. Many recent threads.
If you will buy narrow, self aligning, full 1.6 rockers you won't need new anything except new springs and keepers. The LT4 springs are availible through GMPP. Many recent threads.
Race Director
Joined: Jan 2002
Posts: 12,261
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From: O'Fallon Missouri
Burning Brakes
Joined: Sep 2005
Posts: 993
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From: Iowa
Crane Golds are good, Scorpions have worked equally well for us so I don't really see a difference other than price. Oh, and we're talking .715 lift with about 750lbs spring pressure on these; not just normal hot rod stuff. Both have worked, take your pick. As for your pushrods; you will be fine. We find the need to upgrade pushrods with spring pressure that will cause them to bend. Also, I don't think for that amount of money the retainers mentioned above are titanium.....that would be the deal of a lifetime though!
Racer
Joined: Jul 2004
Posts: 285
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From: San Diego CA
And be prepared to have the PCM tuned after you do your install of springs, rockers and keepers. I dont believe you need the "shims". Not to start this one up again - but - if your not running an LT-4 knock module
after your install you WILL have timing being pulled out of the motor 
...........
Race Director
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From: O'Fallon Missouri
Team Owner
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From: eville in